in equilateral triangle DEF,if DE=6,can i have the value of the alititude?
i cannot remember the formula now.
thanks,
請教,找不到一個公式了:
所有跟帖:
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Find a middle school Geometry text book, and read it!
-念親-
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12/14/2009 postreply
14:50:37
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altitude h = DE sin 60 = sqrt(3)/2 * DE
-任我為-
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12/14/2009 postreply
15:20:26
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謝謝任教授沒笑話我...上幾年班以後把這些知識都全部還給老師了,汗顏!
-陶陶樂,樂陶陶-
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12/14/2009 postreply
16:35:51
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Why didn't thank me?!!!
-念親-
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12/14/2009 postreply
18:53:13
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回複:Why didn't thank me?!!!
-陶陶樂,樂陶陶-
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12/14/2009 postreply
21:34:40
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回複:回複:Why didn't thank me?!!!
-陶陶樂,樂陶陶-
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12/14/2009 postreply
22:11:19